<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name" />
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0" />
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师" />
          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career" />
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea" />
      </el-form-item>

      <!-- 讲师头像-->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar" />
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>
        <!--
        v-show：是否显示上传组件
        :key：类似于id，如果一个页面多个图片上传控件，可以做区分
        :url：后台上传的url地址
        @close：关闭上传组件
        @crop-upload-success：上传成功后的回调-->

        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"
        />
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import teacherApi from "@/api/edu/teacher";
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default {
  components: { ImageCropper, PanThumb },
  data() {
    return {
      teacher: {
        name: "",
        sort: 0,
        level: 1,
        career: "",
        intro: "",
        avatar: ""
      },
      saveBtnDisabled: false, // 保存按钮是否禁用,
      imagecropperShow:false,//上传弹框组件是否显示
      imagecropperKey:0,  //上传组件key
      BASE_API: process.env.BASE_API,  //接口Api地址 获取dev.env.js里的BASE_API
    }
  },
  created() {
    this.init()
  },
  watch: {
    //监听
    $route(to, from) {
      //路由变化方式 当路由发生变化的时候执行
      this.init()
    }
  },
  methods: {
    //关闭上传弹框
    close(){
        //关闭上传弹框
        this.imagecropperShow=false
        //上传组件初始化
        this.imagecropperKey=this.imagecropperKey+1
    },
    //上传成功的方法
    cropSuccess(data){
      //上传之后接口返回图片地址
      this.teacher.avatar=data.url
      this.imagecropperShow=false
       //上传组件初始化
      this.imagecropperKey=this.imagecropperKey+1
    },
    init() {
      if (this.$route.params && this.$route.params.id) {
        const id = this.$route.params.id;
        this.getInfo(id)
      } else {
        //清空
        this.teacher = {
          sort:0,
          avatar:"http://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoj0hHXhgJNOTSOFsS4uZs8x1ConecaVOB8eIl115xmJZcT4oCicvia7wMEufibKtTLqiaJeanU2Lpg3w/132"
        }
      }
    },
    //根据id查询讲师
    getInfo(id) {
      teacherApi.getTeacher(id).then(res => {
        this.teacher = res.data.teacher;
      });
    },
    saveOrUpdate() {
      this.saveBtnDisabled = true;
      if (!this.teacher.id) {
        this.saveData()
      } else {
        this.updateTeacher()
      }
    },

    // 新增保存
    saveData() {
      teacherApi.addTeacher(this.teacher).then(res => {
        this.$message({
          type: "success",
          message: "添加成功!"
        });
        //回到列表 路由跳转
        this.$router.push({ path: "/teacher/list" });
      });
    },
    //修改保存
    updateTeacher() {
      teacherApi.updateTeacher(this.teacher).then(res => {
        this.$message({
          type: "success",
          message: "修改成功!"
        });
        //回到列表 路由跳转
        this.$router.push({ path: "/teacher/list" })
      });
    }
  }
};
</script>

<style scoped>
</style>